Sprint today officially announced a print One Up, an upgrade program that gives unlimited talk, text and high speed data while on the Sprint Network plus the ability to upgrade their smartphone every 12 months starting at $65 a month. The new program is available Sept. 20 to Sprint's new and existing customers on Unlimited, My Way and My All-in plans.

With Sprint One Up, participating smartphone customers get unlimited talk, text and data for an introductory rate of $65 per month - a $15 per month savings off their Unlimited, My Way standard rate plan and Sprint's guarantee of unlimited talk, text and data for the life of the line of service. Sprint One Up is also available for smartphones on the My All-in plan as well as on tablets in combination with tablet plans starting at $5 a month.

To participate, customers purchase an eligible smartphone or tablet and agree to 24 monthly installment payments for the device. For a limited time, Sprint is offering its customers no down payment for the device. After 12 consecutive payments, Sprint's customers can give back their current device and upgrade to a new smartphone or tablet.

Sprint's arger rivals AT&T and Verizon Wireless both embraced similar policies in July. T-Mobile US, the No. 4 U.S. mobile provider, first offered an upgrade plan earlier this year. T-Mobile?s offering, called Jump, lets users upgrade their phones twice a year for a $10 monthly fee.